/**
 * 第17章 动态注册和Servlet容器初始化
 * 项目访问根路径：http://localhost:8901/p3ch17b
 * 代码清单-p3ch17b-292页a：被ServletContainerInitializer注册的Servlet {@link top.kaoshanji.p3ch17b.UsefulServlet}
 * 代码清单-p3ch17b-292页b：ServletContainerInitializer实现类 {@link top.kaoshanji.p3ch17b.MyServletContainerInitializer}
 *
 * @author kaoshanji
 * ^_^
 * create time 2025/4/9 17:02
 */
package top.kaoshanji.p3ch17b;